Pith Number

pith:4FAX4FU2

pith:2018:4FAX4FU2NTZUTW2YMENEEHBD3B

not attested not anchored not stored refs pending

Metal Deficiency in Two Massive Dead Galaxies at $z\sim2$

B. Vulcani, G. B. Brammer, K. B. Schmidt, L. E. Abramson, M. Stiavelli, M. Trenti, P. Kelly, T. Jones, T. Morishita, T. Treu, X. Wang

arxiv:1803.01852 v1 · 2018-03-05 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4FAX4FU2NTZUTW2YMENEEHBD3B}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:19:20.500525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1417e169a6cf349db58611a421c23d87a7dfc2b9ed00a8696ae2e3acdce03ec

Aliases

arxiv: 1803.01852 · arxiv_version: 1803.01852v1 · doi: 10.48550/arxiv.1803.01852 · pith_short_12: 4FAX4FU2NTZU · pith_short_16: 4FAX4FU2NTZUTW2Y · pith_short_8: 4FAX4FU2

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/4FAX4FU2NTZUTW2YMENEEHBD3B \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: e1417e169a6cf349db58611a421c23d87a7dfc2b9ed00a8696ae2e3acdce03ec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6203b4f6e35ca21f99180b126f543f650c2fef3bfe0c558bfe812c14c8078ef7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-03-05T19:00:00Z",
    "title_canon_sha256": "732148e361a90a327a6a90a2e9ec7b2607506c7d94065ac03ad35ea560e61599"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.01852",
    "kind": "arxiv",
    "version": 1
  }
}